Portable elevator



(No Moflel.)

R. DUNBAR.

. PORTABLE ELEVATOR. No. 264,938.; v Patented Sept. 26, 1882.

Inventor.

. U S, Pl'mo-Lilhognpher. w: uingiun. D.C.

UNITED STATES ENLQEEE ROBERT DUNBAR, ()F BUFFALO, NEW YORK.

PORTABLE ELEVATOR.

SPECIFICLATION forming part of Letters Patent No. 264,938, dated September 26, 1882.

l Application filed July 17, 1882. (No model.)

To all whom it may concern: 7

Be it known that I, ROBERT DUNBAR, a citizen of the United States, residing in Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Portable'Elevators, of which the following is a specification.

The object of my invention is to produce a portable elevator or elevator-tower capable of being conveniently and quickly moved from place to place, so as to reach the different hatches of a vessel without the necessity of moving the same, thereby obtaining the advantage of less dockage and affording the means whereby two elevators may be operated in the same vessel at the same time, so that a stationary elevator may be used' in one hatch while the movable elevator may be adjusted to operate in another hatch, all ofwhich will be fully and clearly hereinafter shown by referencetotheaccompanyingdrawings,in which Figure 1 is a front sectional elevation; Fig. 2, a side sectional'elevation and Fig. 3 is a diagram showing a top view of the arrangement of the cables and pulleys forholding the building secure at any point to which it may be moved.

A represents an elevator or elevator-tower; B, the usual elevator-leg, which is supplied with the usual buckets, an engine, and other connectionsfor operatin g the same, all of which may be constructed and arranged in the ordi nary way, so that no further description of this part of the apparatus is required here.

The elevator-tower is supported on flanged wheels 0, rigidly secured to shafts D.

E represents a series of parallel rails, made preferably of railroad-iron.

F is a'druin having a cable or chain, G G, secured thereto and rigidly fastened to two parts, H H, so that one will wind around the drum and the other unwind as the drum turns.

1 J represent an endless screw and a wormwheel, which operates the drum F by means of the spur-wheel K and pinion L.

M M represent two cranks, by which the device is operated. (See Fig. 1.) This arrangement gives the power required to move so large an apparatus.

N is an endless screw and worm-gear, simi- 'ing description.

lar to that just described, (see Fig.2,)of which there are two, (one on each side of the elevator,) for operating the drums N. To each of the said drums N are connected the cables 0, which pass over the grooved pulleys O and against the pulleys 1?, (see Figs. 2 and 3,) so that the tower may be connected either to the main building or elevator or to any other point of support. The object of this part of the apparatus is to securely hold the elevator-tower in its proper position when adjusted to the required point along the front of the main building, and hold it laterally and from being drawn forward by the weight or action of the elevator-leg and its connections, which are on the opposite side of the elevator.

The railroad-tracks E are arranged in parallel lines along the whole length of the main elevator.

1% represents a spout for transferring the grain from the tower to the main elevator.

The line B represents a portion of the main stationary elevator. Itis provided with a beam, T, arranged horizontally along its whole length. The elevator-tower is also provided with a similar beam, so that when the two are drawn together by the cables 0 they will face each other, as shown in Fig. 2, and the two buildings will thereby be held firmly together.

0n the main stationary elevator is a long trough, S, extending horizontally along its whole length, so as to receive the grain from the spout 1% from any point to which the elevator-tower may be adjusted.

V represents a suitable engine, arranged on the lower floor'of the elevator-tower, so as to prevent the shakingor trembling of the upper floors, where the weighing of thegrain is done.

The operation of the invention will be readily understood from the drawings and forego- By operating the drum F, as before mentioned, it will cause the elevator to be drawn either to one side or the other, 'according to the direction in which said drum may be turned, afterwhich it is firm] y secured to the main building, as before mentioned.

I claim as my invention-' 1. An elevator tower provided with the wheels 0, adapted to run on a suitable roadway or rails, E, and a drum, F, with its operating mechanism, substantially as specified, in combination with the cables (ropes or chains) secured to the parts H H, substantially as and for the purpose described.

2. In an elevator-tower, the'combination of the mechanism, substantially as described, for moving it horizontally back and forth, with the gearing N, drums N, and cables 0, for securing it at any point to which it may be moved.

3. A movable and adjustable elevator-tower arranged upon wheels, and provided with the cables 0, gearing and drums NN, and a grain spout, R, in combination with a main stationary elevator-building, R, having a long hori- ROBERT DUNBAR.

Witnesses:

JAMES SANGSTER, ALBERT LORENTZ. 

